Walter e



(No Model.)

III

W. FROST.

GRIMPING; MACHINE.

tented July 4, 1893,

UNITED STATES PATENT OFFICE.

WALTER E. FROST, OF LEWISTON, MAINE, ASSIGNOR TO THE S. W. JAMISON BOOTAND SHOE ORIMPING MACHINE COMPANY, OF NEW YORK, N. Y.

CRIMPING-IMAICHINE.

SPECIFICATION forming part of Letters Patent No. 501,044, dated July 4,1893. Application filed March 2, I891- Serial'No. 383,422. (No model.)

To all whom it may concern:

Be it known that I, WALTER E. FROST, of Lewiston, county ofAndroscoggin, State of Maine, have invented an Improvement in 5Crimping-Machines, of which the following description, in connectionwith the accompanying drawings, is a specification, like letters andfigures on the drawings representing like parts.

I This invention has for its object to improve and simplify theconstruction of crimping machines.

In accordance with my invention, the form plate about which the leatheror other mate- I rial is shaped by the jaws, is composed of a thinmetallic steel plate supported at each end, the carrier carrying thejaws which 00- operate with the form plate being so shaped that it inits reciprocations may pass the supports for the ends of the form plate.In

the present instance of my invention, the carrier is made substantiallyU shaped, or is forked in such manner as to receive a vertical post bywhich to support the inner end of the form plate inside the inner endsof the jaws. The outer end of the form plateis supported bya posterected outside the outer ends of the jaws.

My invention consists essentially in a crimping machine containing thefollowing instrumentalities, viz:-two posts, a form plate mountedloosely thereon at its opposite ends, and a jaw-carrier, and jaws,combined with a steadying device consisting of a depending 3 5 ear and aspring attached thereto and to one of said posts, to keep the form platein proper vertical position with relation to the jaws, substantially aswill be described.

Other features of my invention will be pointed out in the claims at theend of this specification.

Figure 1 in side elevation represents a crimping machine embodying myinvention; Fig. 2, a partial section in the dotted line 00; Fig. 3, apartial vertical section in the dotted line m; Fig. 4, a sectionaldetail showing part of the handle p and devices carried by it; Fig. 5, adetail to be referred to.

The frame work consists essentially of a 50 base A and an upright orcolumn A, the

shape of which is best shown in Fig. 4. The base A has suitable bearingsfor the main shaft B, which is surrounded with two loose pulleys B, Band an intermediate fast pulley B with which pulleys will co-operate acrossed and an open belt, not shown but all as usual. The shaft B has abevel gear B which engagesa bevel gearC fast on the lower end of avertical shaft 0' having a worm C the, shaft 0 having suitable bearingsin the upright or column A. This column is so shaped, see Fig. 4, as toconstitute a guide for a slide-bar D having at its rear side awormtoothed rack d, whichis engaged by the worm, the latter in itsrotation in one or the other direction raising or lowering the saidslidebar with the attached jaw-carrier D.

The j aw-carrier, best shown in Fig. 2, is forked, or substantially ofU-shape, to leave two parallel arms 0?, d, between which are supportedusual jaws e, c, a considerable space, as (:1 being however left betweenthe inner, or as herein shown, the right hand side of the jaws'and thehead (1 of the carrier for the reception of a post 2 on the upper end ofwhich is mounted loosely the inner end of the form plate f of usualshape, it receiving a suitable bolt or pin to prevent it risingvertically from the post. The base A has also erected uponit a secondpost 3, on the upper end of which ismounted loosely the outer end of theform plate, abolt or screw preventing it from being lifted verticallyfrom the post 3. These posts are at a distance apart greater than thelength of the jaws, so that the jaws in their reciprocations may movebetween them and at the same time pass the form plate between its ends.

The form plate supported at both ends, as described, loosely, might tipout of place more than desired, and to avoid this I have attached to adepending ear f of the plate a steadying device g, herein represented asa spiral spring, the strength of which may be more or less, as required.The jaws e, e are 5 corrugated in usual manner at their inner faces. Thejaw e is fixed or held rigidly to the arm 01 of the carrier by twoscrews h,

h, a screw h being used to back up the jaw and aid in adjustment. Thejaw 2' however 100 is mounted on the arm (1 so as to yield somewhat andto be adaptable to diiferent thicknesses of leather, and also tovariations in thickness in the piece of leather being erimped.

The jaw e has screwed into it near its centerastud 7, which is extendedloosely through a boss or hearing in the arm cl, see Figs. 2 and 3, theouter end of the said stud abutting against a spring wt, preferably ofindia-rubber, inclosed in a sleeve on, said sleeve also inclosing,preferably loosely, a member 8, which is acted upon by an adjustingscrew 9 screwed into a bridge m secured, as represented, at its oppositeends by bolts 10, 10 to cars extended respectively from the upper andlower edges of the arm 61 as best shown in Fig. 3, the inner ends of thesaid bolts receivingfirst upon them suitable nuts by which to retain thebridge and the jaws firmly in contact, and thereafter each bolt hasscrewed upon it a pressure-regulating device shown as a nut 12, whichcontacts with a spring 13, preferably made of india-rubber and whichabuts against the outer side of the jaw. By turning these nuts 12 theextent to which the jaws may tip about a horizontal pivot may beregulated.

The jaw 6 near its outer end has attached to it two screws n, n, hereinrepresented as extended through the arm d and surrounded outside thesaid arm by a suitable spring, as 92,, but if desired the said springsmay be omitted and instead the said screws may be threaded to theirouter ends and be provided with a thumb nut, as at, see Fig. 5, wherethe said modified form of screw is shown separately.

The arm cl has attached to it a shipper controller 19, shown as a metalbar having two pins 14:, 15, made adjustable in slots of the said bar,so that the said jaws may become effective sooner or later in thereeiprocations of the jaw-carrier to actuate the belt shipper to bedescribed.

The hand lever 19' is attached to a rockshaft 19 having a second arm 213loosely connected to the sliding shipper-bar 19 having forks 19 p toreceive the usual belts.

The upright A has two stands 7", 7' which support the upper and lowerends of a rod 0" screw threaded near its lower end to receive a nut W,on which is seated a spiral spring 1 the adjustment of the nutregulating the effective strength of the spring. The rod '1" above thespring is surrounded by an L- shaped block or rest 1", which at timessustains a pin 16 extended laterally from a rib of a sleeve 0'' mountedon two rods 17 and 60 held in ears of a casting or yoke 18 mounted onthe handle 19. The sleeve r is acted upon by a spring 19 surrounding therod 17, and the sleeve has a pin 20, which is engaged by a lever 21connected by a link 22 to a treadle or lever 23.

In Figs. 1 and 4 the pin 16 is shown as on the rest W, and the jawcarrier is supposed to be down and the machine at rest with the usualbelt on the two loose pulleys B, 13

To start the machine, an upper to be crimped having been properlypresented between the jaws and form plates, the operator will put hisfoot on the treadle 23, and turn the lever21 far enough to remove thepin 16 from above the L-shaped block 0 and thereafter the continuedpressure on the treadle will cause the lever 19 to be depressed so as tomove the shipper p to the right viewing Fig. 1, and put the belt carriedby the loop 19 let it be supposed to be an open belt, on the fast pulleyB This will rotate the shaft B in the direction to lift the jaw carrierand cause the jaws to pass the leather over and about the form plate f.The jaw carrier having been elevated as high as desired, the projection15 on the bar 19 strikes the under side of the yoke 18, butting it withsuch force as to lift it and the lever 1; far enough to move the beltSh1pper over to the left far enough to cause the loop 29 to transfer thecrossed belt held by it upon the fast pulley 13 thus reversing therotation of the shaft B to lower the jaw carrier. During that time theyoke 18 is lifted sufficiently with relation to the L-shaped block 9,which block cannot rise, to put the pin 16 aga n upon the said block Twhen the bar 19 again descends with the jaw carrier. During the descentof the jawcarrier, the pin 14 strikes the rod 60 fixed to the yoke 18and gradually depresses the lever 1) against the resistance of thespring 7' gradually moving the belt shipper until the crossed beltreferred to then on the fast pulley is slipped upon the loose pulley 13This movement however, is so gradual that the open belt in loop 12 1snot put full upon the fast pulley B so as to engage and rotate the same,and the spring r compressed by the momentum of the machine thereafterrecoils and rises and in so doing puts the lever 9 in the centralposition Flg. 1 thus placing the belt shipper in position to put bothbelts on the loose pulley. In this position shown in Fig. 1, the machinemaybe again started by the operator with his foot on the treadle.

I claim- 1. In a crimping machine the following instrumentalities,viz:--two posts; a form-plate mounted loosely thereon at its oppositeends; a steadying device for said form-plate, the same consisting of adepending ear and a spring; a jaw-carrier; a rigid jaw e adjustablymounted in said jaw-carrier; a yielding jaw 6 also mounted in saidjaW-carrier,combined with a shipper lever, a block, as 18, mountedthereon, a lever pivoted on said block, a slide r connected to saidlever, a screw rod 1', its spring W, a nut r to adjust the spring, and ablock W, to operate as and for the purpose set forth.

2. In a crimping machine, two posts, a form plate mounted looselythereon at its opposite ends, and a jaw-carrier, and jaws, combined Intestimony whereof I have signed my with a steadying device consisting ofa denameto this specification in the presence of pending ear f and aspring having one end two subscribing Witnesses. attached thereto, andits other end held fix- WALTER E. FROST.

5 edly, to keep the form plate in proper verti- Witnesses:

cal position with relation to the jaws, sub-- 7 GEO. W. GREGORY,stantiaily as described. A. S. WIEGAND.

